A great Horseface Blenny!
Origin: West Americas

Size info:
Size M: approx. 2.25 - 4.25"

There once was a Horseface Blenny
Whose face looked quite odd and plenty
It can change its hue
From yellow to blue
And its venomous bite is not penny-ante

This fish has a unique defense
A toxin that makes predators wince
It also can hide
In a hole, safe inside
Its home reef, to keep safe from offense

And though it may seem quite bizarre
With its horse-like face from afar
The Horseface Blenny
Is quite the trendy
Fish to see, in every reef and sandbar.

Keeping Horseface Blenny (Ophioblennius steindachneri) in an aquarium

The Horseface Blenny is a popular addition to many saltwater aquariums thanks to its quirky appearance and unique behavior. Here are some key things to know about keeping these fish in your aquarium:

Tank setup

Horseface Blennies thrive in a tank with plenty of hiding places, so be sure to include ample rockwork, caves, and other structures for them to explore and hide in. They are also good jumpers, so a tight-fitting lid is a must to prevent escape.

Feeding

Horseface Blennies are omnivores and will eat a variety of foods, including algae, small crustaceans, and prepared foods like frozen or pelleted diets. They may also nip at coral and other invertebrates, however, so be sure to monitor their behavior if you have a reef tank.

Behavior

One of the coolest things about Horseface Blennies is their unique swimming style - they use their dorsal fin to "crawl" along the substrate and rocks, giving them a distinctive horse-like movement. They can also be quite territorial and may spar with other fish, especially other blennies, so be sure to provide plenty of hiding spots for them to retreat to.

Overall, Horseface Blennies make an interesting and entertaining addition to a saltwater aquarium, as long as you are prepared to provide them with plenty of hiding spots and a varied diet.